Sheet delivery apparatus for folding machines



Dec. 27, 1938.

G. SPIESS 2,142,011

SHEET DELIVERY APPARATUS FOR FOLDINGMACHINES Filed Dec. 2, 1936 7 3 o Ig Patented Dec. 27, 1938 [UNITED STATES SHEET DELIVERY APPARATUS FORFOLD- KING MACHINES Georg Spiess, Leipzig, Gery Application December 2,1936, Serial No. 113,900

In Guy December 3, 1935 4 Claims.

This invention relates to improvements in and relating to sheetdeliveryapparatus for folding machines.

In buckling folding machines for transverse g folding, variousarrangements are already known tion. This apparatus necessitates theinstallation of a special collecting band and the connection thereofwith the machine driving mechanism and the stopping of the transversefeeding means.

20 In another known apparatus, delivery feeding means are provided,between the transverse feeding means of the angular feeding table of thefolding mechanism which means are moved in the same, or approximatelythe same, direction as the sheet ejection from the previous foldingmechanism and which have a disconnectible drive adapted to the sheetdelivery. With this arrangement of the transverse feeding table, thesheets are injuriouslyaffected on feeding to the 30 delivery position bythe transverse feeding means of the table and on the transverse feedingto the next transverse folding mechanism by the delivery feeding means.The sheets to be delivered according to the parallel folding method mustbe fed over the transverse feed rollers which easily put the sheets tobe delivered out of adjustment.

Apart from this, the transverse feeding, provided in the knownarrangement, by two conical rollers engaging at one edge of the sheetand only at 40 the very limited front part of .this edge together withpressing of the sheets by balls, is scarcely reliable. Interference bythe delivery feeding bands still takes place.

The principal object of this invention is to overcome thesedisadvantages and to this end according to the invention, the feedingmeans serving for delivering the sheets are arranged raisable andlowerable between the usual transverse feeding rollers cooperating withinclined running pressure rollers, brush wheels or the like which areadjustable and bear from above such that its feeding plane can belowcred beneath the feeding plane of the transverse feeding means or canbe elevated above the latter. For this purpose, for example, thefeeding-band rollers and continuing the feeding in the former direccanbe arranged on a common lever system so that they form a completedelivery table. If the bands lie between long angular feeding rollersthen their feeding direction-will, owing to the space proportions, haveto be approximately at right angles to the roller feeding direction. Ifnow, the deliveryapparatus is to coincide approximately with theejection direction of the folding rollers, then the circumferentialforces of the angular feeding rollers will have no, or only small,components in the direction of the guide ruler along which the sheetposition is guided during the angular feeding. These componentstherefore result from the pressure means which press the material to befolded on the feeding rollers more or less strongly according to theiradjustment; these rollers or the like must thus be arranged inclined tothe feeding roller axes. If, however, instead of the angular feedingrollers, only short stub-rollers or rolls are provided, the bands canlead straight out and the intermediately lying feed rollers can, nevertheless, feed in an inclined direction. If the machine is to be changedfrom angular feeding to delivery, then the guide ruler with the pressuremeans for the angular feeding rollers must first be brought out of rangeof the delivery path. This can, if desired, be 'eifected at the sametime as the raising of the delivery table; the ruler with the pressuremeans secured thereon must then be secured to parts of the deliverytable instead of to-the angular feeding table. For the purposes of thechange, it is, moreover, necessary for the bands, if they have beenstationary during the angular feeding, to be set in motion eitherquickly, slowly, continuously or intermittently according to the type ofdelivery desired. On starting delivery, the angular feeding rollerstherefor can be put out of operation. However this is not necessary ifthe delivery table, during the working, lies in a different plane fromthe angular feeding table. 0n the other hand, on stopping, the table notbeing used at the time, it is not necessary that the tables should liein two different planes, 1. e. be raised or lowered; for the stationaryfeeding members do not smear the sheets incontradistinction to theknown. bands or the like rotating at right angles to the sheet feeding.

The arrangement according to the invention allows also of using a.delivery mechanism and an angular feeding table at the same timeadjacent one another, that is to say, delivering the sheetssimultaneously according to a parallel folding method and feeding themto a. transverse parallel folded sheets.

folding mechanism. This is of importance where sheets are out accordingto the parallel folding method and one half of the cut sheets are to befolded transversely and the other half are to remain folded only in aparallel manner. For this purpose, the sheet delivery arrangement may beso arranged that only a certain number of the bands can be raised theremainder remaining lowered beneath the feeding level of the feedingtable and the guide ruler only extending over half of the angularfeeding table.

In order that the invention may be fully understood, I will now describeone'embodiment thereof, by way of example, by reference to theaccompanyins drawing, in which:-

Fig. 1 is anelevatinn.

Fig. 2 is a plan view of. feeding mechanism embodying the invenflonshowing the t for angular feeding, and

Fig. 3 is a view corresponding to thatof Hg. 1, butdrawntoalargerscaleofthesheetdelivery arrangement according to theinventlon,in the operating position.

Referring to the drawing, I indicates the feeding table of a foldingmachine in the form of an inclined roller table with a laterallyarranged registering ruler 2 which guide the sheets to a parallelfolding system consisting of rollers 2 and fold plates 4 and deflectingmembers or change-over guides 5. The parallel folded sheets pass betweenfeedingrollers 2 on the axis of which, if desired, there may be arrangedlongitudinal cutting tools. The sheets then pass over a guide plate 8and a feeding roller 9 with pressure rollers lIi onto an angular feedingtable consisting of rollers I2 carried in a frame II which rollers aredriven together in the same direction and feed the' parallel foldedsheets along an adjustable guide ruler It to a transverse foldingmechanism I4.

The rollers I2 are connected to the main drive means of the device by aconstantly rotating clutch member 41 carried on a drive shaft 39. Themember 41 is slidable on said shaft for a driving engagement with aclutch member 42 freely rotatable on-said shaft. Member 42 has a hubmounting a sprocket 4I carrying a chain or belt 43. The nearroller I2carries a pinion and a sprocket 44 on the shaft thereof. The chain orbelt 43 engages said sprocket 44 to drive said near roller I2. Asuitable gear train 46 connects said near roller I2 with the remainingrollers l2 to drive all of the same in the same direction.

The inclined drive of the sheets against the guide ruler which isnecessary for registering the sheets at the ruler is produced byinclined rollers or brush wheels I5 which press the sheets onto thefeeding rollers I2. The rollers or brush wheels I5 are carried in aknown manner in car riers I6 adjustably secured to the guide ruler I3and are arranged adjustable as regards the inclined position of theiraxes with respect to the axes of the feedingrollers in order that theirinclined drivecan be adjusted in accordance with the quality of thepaper being worked. Such an arrangement is shown and described in myprior Patent No. 1,898,794, dated February 21, 1933.

Between the feeding rollers I2 of the angular feeding table are arrangedfeeding bands I! which run perpendicularly to the guide ruler I3 that isto say in the direction of ejection of the These bands are guided overrollers I8, I9 which are carried at the free ends of arms 20, 2|, whichare pivotally connectedinpairsbyarodfl. Thearms20are arranged on acommon shaft 22 and the arms 2| on a shaft 24 which latter is providedwith an adjusting lever 25 with a pin for adjusting the arms 26, 2| andconsequently the feeding bands I1. 'Each roller is is provided with apinion wheel 2' which can be brought into engagement with acorresponding pinion wheel 21 mounted onashaft 22 andcanbegcareddownfromthe drive of the folding machine in any suitable way, either with auniform speed as, for example, by means of a change speed gearmechanism. or

with an intermittent drive by means of a pawl and ratchet device. Thisis not fully shown in the drawing as it is known.

On adjusting the machine for transverse folding, which is illustrated inFigs. 1 and 2, the lever system 22, 2|, 22 withthe rollers II, II andthe bands IIissoadjustedthatthefeedingleveiof the bands I'l liesunderneath the feeding level of the roller table II, I2. .The sheetsejected by the rollers 2, II onto the angular feeding table aredelivered to the feeding rollers l2 and now arrive beneath the inclinedrollers or brush wheels II. By the co-operation of the feeding rollersI2 and the inclined rollers or brush wheels II, the sheets are fed alonga guide ruler I3 to the transverse folding mechanism l4. The bands II donot contact with the sheets and are stationary.

If the parallel folded sheets are to be delivered, then the guide rulerwith the inclined rollers or brush wheels I! is taken of! and the leversystem 20, 2I, 22, with the rollers I8, I9 and the bands I'I, is broughtinto the position illustrated, by Fig. 3, in which the pinion wheels 26,are connected with the rollers I9, and are brought into engagement withthe driving pinions 21 and the feeding level of the bands I1 is elevatedabove the feeding level of the feeding rollers l2. The parallel foldedsheets ejected by the rollers 2, III now arrive directly on the deliverybands l1 and are fed by them to a pile plate 29 secured to the machineframe.

With an inclined arrangement of the feeding rollers I2, freely mounted.pressure balls can be used for pressing the sheets on to the feedingrollers, instead of the inclined pressure rollers or brush wheelsillustrated.

I claim:-

1. Sheet delivery apparatus for transverse feeding tables of foldingmachines, said folding machine including means for delivering sheets inone direction to said transverse feeding table,

- rolls on said table for moving said sheets transdirection of delivery.

2. Sheet delivery apparatus for transverse feeding tables of foldingmachines, said folding machine including means for delivering sheets inone direction to said transverse feeding table, rolls on said table formoving said sheets transversely of said direction of delivery, means fordriving said rolls, means on said table movable in said deliverydirection, said last'means normally being maintained in an inoperativeposition below the plane of the top surface of said rolls, means forraising said last means to an operative position above the plane of thetop surface of said rolls, and means for driving said. raised means todeliver sheets from said table in a direction correspondingsubstantially to said direction of delivery, said last named drivingmeans being operative only when said means are raised to said operativeposition.

3. Sheet delivery apparatus for transverse feeding tables of foldingmachines, said folding machine including means for delivering sheetsoperative position above the plane of the top surface of said rolls,means for driving said raised means to deliver sheets from said table ina direction corresponding substantially to said direction of delivery,and means for ng said rolls from said driving means therefor.

4. Sheet delivery apparatus for transverse feeding tables of foldingmachines, said folding machine including means for delivering sheets inone direction to said transverse feeding table,

rolls on said table for moving said sheets transversely of saiddirection of delivery, means for driving said rolls, means on said tablemovable in said delivery direction, said last means normally beingmaintained in an inoperative posi-- .means when the latter are loweredto the inoperative position, and means for disengaging said rolls fromsaid driving means therefor.

GEORG SPIESS.

